Refrigerating or cooling apparatus



Nov. 26, 1929. H. HAAGER Y 1,737,083

REFRIGERATING OR COOLING APPARATUS I Filed Aug. 26, 1927 //7 van for:

Hal/76' baayer,

Patented Nov. 26, 1929' PATENT OFFICE HANS HAAGEB, OF BAD HALL, AUSTRIA marmenaarme 03 000mm; Arrmrus Application filed August 26, 1927, Serial No. 215,660, and in Austria September 8, 1926.

This invention relates to improvements in refrigerators or coolers which, owing to their construction and arrangement and in consequence of their small size, form a handy small tool, which is readily portable and can be used at any desired place.

The essential feature of the present invention consists in-that a vessel, containing in known manner the refrigerant and connected with a'cooling coil condensing the vapours, is provided with means for connecting it into an electric heating current, whereby the said evaporating vessel is arranged above the tubular spiral coil and substantially concentrically with respect to the same, so that after cutting off the boiler the whole device can be readily removed from one place to any other convenient place for the object of cooling or refrigerating, whereby the same tubu- 2 lar coil now acts in the manner of an evapo-' rator.

Preferably the tubular coil passes into the evaporating vessel above thelevel of the liquidcontained in the same by way .of a reduced admission opening.

One mode of carr 'ng out the present invention is illustrated by way of example, in

- sectional elevation in the drawing.

A conveniently thick-walled evaporating 0 vessel 1 consists of a cylindrical casing, which is tightly closed by a bottom 2 and a lid or cover 3. The bottom 2 is shaped in such a manner, that contact ieces 4 may be fitted to the same for the attac ent of wires supplying electric current. The lid 3 is provided with a screw 5 for charging the vessel, and the free end of the tubular coil 6 is connected to the said lid and, in the illustrated embodiment, passes underneath. the bottom 2 and 7, disposed coaxially with respect to the evaporating vessel. The bottom end of the tubular e011 6 is closed up, and the admission opening 8 in the lid 3 of the evaporating vessel is of small size.-

With this purpose in view, and as the main feature of my invention, I combine a small vessel for the refrigerant medium with a tubular coil-shaped condenser-evaporator, arranged coaxially below the said vessel.

there is formed with spiral-shaped windings Ifurther I provide on the said vessel means for connecting it to any source of electric heating energy, in order to restore in the most convenient manner the used up refrigerating faculty of the tool by simply passing some electric current through the vessel of the cooling apparatus. In the design of my new and improved cooling apparatus it is an es-' sential point, that the coil which serves at the same time as the condenser and as the evaporator, is arranged coaxially immediately beneath the vessel containing the refrigerator medium, and that this coil has approximately the same diameter as this refrigerator vessel, so that a small handy tool is formed, which can be readily dipped or inserted into anv container for a liquid to be cooled. Another characteristic feature and advantage of the improved refrigerator-cooler consists there in, that the part of the condenserevaporat-or tube, which leads from the upper end of the coil to the upper part of the refrigerator vessel, passes closely along the said vessel, so as to form a kind of handle or grip, by which this new tool may be held or may be sus- 75 pended when it is not used.

When the evaporating vessel is removed from the contact-pieces and the tubular coil is immersed into a liquid to be cooled, the ammonia will flow back and condense in the evaporating vessel, as heat is withdrawn from the liquid to be cooled and thus this liquid is cooled.

In place of the provision of contact-pieces 4 as shown in the drawing, the electric wires may be passed into the evaporating vessel in order to directly heat the liquid contents, however care having to be taken, that the wires have to be properly packed and insulated at the admission places. In order to protect the water, contained in the evaporating vessel, against evaporation the arrangement may be such, that the wires supplying the electric current and immersed into the liquid do not pass down to the bottom of the evaporating vessel. A fuse or cut-out may be arranged in the current line, in order to prevent an excessive heating.

In order to attain the same object it is also'possible to insulate the bottom of the evaporating vessel, whereby the evaporation of the water-contents is prevented. The evaporating vessel and tubular coil may consist of any convenient material and may be 5 nickel-plated, in order to permit an easy cleaning and satisfy hygienic demands.

I claim 1. Refrigerating or cooling apparatus, comprising in combination an upright vessel containing a refrigerating medium, a coil shaped upright condenser-evaporator, d1sposed underneath the said vessel and substantially coaxially to the same; a tubular connection between the said refrigerating vessel and the said condenser-evaporator coil; and means for connecting the refrigerator vessel to a source of electric heatingcurrent.

2. Refrigerating or cooling apparatus, comprising in combination, an upright vessel containing a refrigerating medium, a coil shaped condenser-evaporator disposed underneath the said vessel and substantially coaxially to the same, an upright tubular connection between the upper end of the said refrigerator vessel, and the upper end of the 'said condenser-evaporator coil, the outlet opening of the said connection tube into the said vessel being reduced in its diameter; and means at the refrigerator'vessel to connect an therewith a source of electric heating current.

3. Refrigerating or cooling apparatus, comprising in combination, an upright cylindrical casing; a lid tightly mounted on the same; a bottom tightly secured to said casing, said lid having acharging opening therein, a stopper closing said opening, an upright coil-shaped condenser-evaporator disposed underneath the bottom of the casing 40 and substantially coaxially to the same, a connection tube terminating in the said lid and projecting along the entire length of the said casing and terminating in the upper end of the said condenser-evaporator coil.

4. Refrigerating or cooling apparatus,

comprising in combination, a small sized upright vessel containing a refrigerator medium, a small coil shaped upright condenserevaporator, disposed underneath the said vessel and substantially coaxially to the same a connection tube connecting the said refrigerator vessel and the'said condenser-evaporator coil and being adapted to serve as a handle or grip for holding the apparatus or for hanging it up, when it is not in use, and means in the refrigerator vessel for connecting it to a source of electric heating current.

In testimony whereof I aflix my signature.

HANS HAAGER. 

